Air conditioning device



Dec. 12, 1939. T. A. TAYLOR AIR counmoume DEVICE 4 Sheets-Sheet l T INVENTOR.

7.'A.771Y BY J02 Wm'ka ATTORNEYS Filed March 21, 1933 Dec. 12, 1939. 1-. A. TAYLOR AIR CONDITIONING DEVICE Filed March 21. 1.933 4 Sheets-Sheet 2 n I l l I INVENTOR.

Dec. 12, 1939. "r. A. TAYLOR AIR CONDITIONING DEVICE Filed March 21, 1933 4 Sheets-Sheet 3 INVENTOR 0E.

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T6. 72M. 7 BY amt Dec. 12, 1939.

T. A. TAYLOR 2,182,973

- AIR CONDITIONING DEVICE Filed March 21, 1933 4 Sheets-Sheet 4 41 O O O O 0 0 6 O /26 ,1

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- I INVENTOR.

UNITED STATES Patented Dec. 12, 1939 PATENT OFFICE AIR CONDITIONING DEVICE Thaddeus Arthur Taylor, 'Lufkin, Tex. Application March 21, 1933, .Serial No. 662,005

9 Claims.

The invention relates to an improvement in oxygen therapy apparatus and particularly to refinements and improvements in the general construction and arrangement of the parts in order to perfect the general operation thereof.

It is one of the objects of the invention to provide a compact and 'efiicient combination control box and treatment chamber which may be readily moved from place to place and which will present. a neat and pleasing appearance.

Another object of the invention is to provide an improved control box wherein the refrigerant and the soda lime are disposed in separate containers with the soda lime so positioned that the carbon dioxide will be removed from the incomingfluid before it reaches the refrigerant.

. Another object of the invention is toprovide an improved shutter control to govern the inlet and outlet of fluid from the control box.

Another object of the inventionis to position the soda lime chamber at the top of the control box and arrange for its adjustment from the exterior of the box.

Another object of the invention is to provide an improved container for the refrigerant so that a greater chilled surface will be exposed to the circulation of fluid, and the humidity can be controlledt is also an object of the invention to provide an oxygen therapy apparatus wherein a percentage of the volume of fluid in the apparatus is being exchanged for room air. I

It is also an object to use the therapy apparatus without soda lime by washing out the excesses of carbon dioxide with an excess circulation of oxygen and outside air admitted.

Still another object of the invention is to provide an improved construction and arrangement of the parts so that the control box may be convenientlypositioned adjacent the bed or treatment' chamber and is capable of adjustment to accommodate itself to varying conditions.

. 'Still another object of the invention is toprovide an improved-support for the treatment housing when it is made up in the form of a tent.

' Still another object of the invention is to provide an improved connection between the treatment housing and the control box so that the connection may be made fluid tight and may also b readily attached and released.

Itis also an object of the invention to provide a control mechanism for the inlet and outlet of air to the control box so treatment by merely cooling the atmosphere may be had without the use of oxygen, if desired.

It is also an object of the invention to control the amount of circulation which is to pass over the soda lime chamber.

it is also an object of the invention to provide a treatment housingwhich is in ,the form of a box or chamber which may be built integral with a bed construction.

It is also an object of the invention to provide a bed box for treatment so that the patient may be conveniently positioned within the box or treatment chamber.

A still further object is to provide a treatment chamber or housing in the form of a bed box so that the patient may be withdrawn from. the box for general nursing treatment.

Another advantage of the bed box construction is that the patient may be withdrawn for nursing treatment and still be confined within an atmosphere of oxygen enriched air. A still further advantage of the bed box construction is that it may be transported to any desired location so that the patient may obtain a sun treatment at the same time the oxygen treatment is being administered.

It is also an advantage of the invention to provide an improved connection between the control box and the bed housing as well as to improvethe general construction and arrangement of the bed chamber as a whole in order to provide simplicity, economy and convenience of operation.

Other objects of the invention are to generally refine and improve the apparatus by providing for adjustment of the various parts from the outside of the device so that no excessive losses of oxygen willoccur and so that the maximum of efficiency may be obtained.

Further objects of the invention will be readily apparent to those skilled in the art when the following description is considered in connection with the accompanying drawings wherein:

Fig.1 is a side view of the general combination apparatus illustrating the mixing box and the treatment housing in the form of a tent.

Fig. 2 is a perspective view of an improved form of refrigerant container.

Fig. 3 is a perspective view of the soda lime container.

Fig.4 is a perspective View showing the mixing box with the refrigerant and soda lime containers removed and illustrating the arrangement of the parts including the closure for the box, the shutter control, and the treatment housing support.

Fig. 5 is a more or less detail View showing the mechanism for operating the shutter control.

Fig. 6 is an end elevation of the box and illustrates the end opposite to that shown in Fig. 1.

Fig. 7 is a general perspective view of the mixing box and treatment housing in the form of a bed box.

Fig. 8 is a view similar to Fig. 7 but showing the treatment housing opened in order to administer nursing treatment to the patient.

Fig. 9 is a sectional View taken on the line 99 of Fig. 8 and showing the bed box treating chamber as well as the arrangement of the parts.

Fig. 10 is a diagrammatic sectional view taken on the line lS-lfil of Fig. '7.

The invention as embodying the treatment housing in the form of a tent is best seen in Fig. 1 and here embodies a carriage I, which is mounted upon rollers 2 in a manner well known. This carriage serves as a support for the uprights 3, which carry the control box 4 to which is attached the treatment housing 5. The uprights 3 may take any desired form in order to support the box t. It is intended, however, that the connection for the box upon the uprights 3 will be so arranged that it can be adjusted vertically in any well known manner. The crank or handle 6 when rotated serves to accomplish vertical adjustment of the box 4. A shield l is connected to the uprights 3 and serves to house the oxygen tank 8 and a water container as well as any other apparatus. This shield assists in presenting a neat and pleasing appearance of the general construction.

The general construction of the box 4 will be best understood by having reference to Fig. 4 wherein the door or closure ID for the box is shown in open position. This door when opened is retained in a horizontal position by means of brace rods H, which are hinged to both the box and the door. A friction hinge is preferable so that the door will remain in any set position. The edges of the door are each provided with a flange l2 which assists in maintaining a seal with the box and in guiding the door into closed position. This flange also prevents any leakage of water or accumulated moisture from around the door. The lower or inside edge of the door is provided with a flange l3 which directs the accumulated moisture down into the box so that it will not flow outwardly around the hinges M by which the door is pivoted to the box. A latch I5 is provided on the door so that it may be secured in closed position to make the box airtight.

The internal construction of the box is such that a trackway I8 is provided for the refrigerant container IT. This container is best seen in Fig. 2 and is arranged to move in and out of the box 4 so that the container may be filled with refrigerant. The trackway I 6 may be provided with a plurality of rollers so that the box may be readily moved. The trackway I6 is shown as extending onto the inside face of the door l0 so that when the door is opened as seen in Fig. 4, the refrigerant container can be quickly and easily moved onto the door or back into the box.

Adjacent the top of the box 4 will be found the support construction for the soda lime tray 28, which is best seen in Fig. 3. This support construction includes a shelf 2!, so that the tray 20 may be moved about in the box. The tray 20 on its rear edge is provided with an extension which cooperates with the flap 22, which is pivoted at 23 to the box and serves to form a closure between the rear wall of the box and the rear of the shelf 2i and behind the soda lime container. The purpose of this flap is to control the circulation by closing the flap as seen in Fig. 4, so that the circulation is compelled to pass through the soda lime and the refrigerating box. A knob 22' is seen in Figs. 6 and 10 to adjust the flap without opening the apparatus. When the flap is dropped some of the circulation may pass over the soda lime chamber and down the rear of the box. Fig. 3 shows the flap 22 attached to the rear of the soda lime tray 20 as a modification of Fig. 4. The lower portion of the box beneath the trackways I 6 may be provided with a set of grilles 25. These grilles extend transversely of the box so that a circulation will be directed to the front of the box because of the cooling of the circulating fluids. These grilles tend to direct the flow through the outlet 26 of the box and also serve as a base for the trackways It. This outlet 26 leads directly into the treatment housing which, as seen in Fig. 1, is the tent 5. The outlet 26, as seen in Fig. 4, is adjacent the base of the box so that the fluid which is cooled in the box will flow by convection from the outlet 26. The oxygen is intended to discharge from the openings 92 and will therefore mix with the air flowing from the box.

The central portion of the front of the box 4 is closed by the front piece 21. This front piece 27 is preferably fixed in position and defines the upper side of the outlet 26 as well as the lower side of the inlet 28 at the top of the box. The inlet 28 is adjacent the top of the treatment housing so that the warmer fluid in the housing which rises to the top will flow by convection into the inlet 28.

The inlet 28 and the outlet 26 are arranged to be varied in size by means of adjustable shutters, the shutter 30, in Fig. 5, being arranged to control the size of the inlet 28 while the shutter 8! serves to control the size of the outlet 26. These shutters 30 and 3| are mounted for vertical sliding movement in suitable guideways 32, which are positioned in the side of the box 4. In order that the movement of these shutters may be readily accomplished, a pulley 33 may be fixed to the box at each end and running over each of these pulleys is a flexible element or cord 34, one end of which is attached to each of the shutters 3D and 3|. In this way the shutters serve to balance each other and may be readily moved to any desired adjusted position by grasping the knob 35, which is connected to the rod 36 fixed to the upper shutter 30.

This rod fits snugly in an opening 31 in the top of the box. Fig. 5 shows the front piece 27 removed to illustrate the arrangement of the parts just described.

A refrigerant container I! is seen in perspective view in Fig. 2 and includes a closed base portion 39, which serves as a receptacle for a quantity of ice, brine, or other refrigerant. The

upper portion of the container is preferably;

screened or foraminated as at 40 to allow circulation therethrough.

. In order, however, that the maximum cooling may be accomplished, the receptacle 39 is pierced by a plurality of tubes 4|, the ends of which are sealed at the sides of the receptacle so that each tube forms a passageway or conduit. Each of these conduits will, of course, be maintained at the lowest temperature because each tube is immersed in the brine or surrounded by refrigerant contained within the receptacle 39. It should be noted that these conduits or tubes 4| are placed adjacent the base of the refrigerant container and when the container is in position within the housing the forward or lower ends of these conduits will be positioned closely adjacent the outlet 25 and directly above the grilles 25. It is intended that these tubes will slope forwardly so that they will assist in the gravity flow of the fluid circulating through the control box. A suitable drain may be provided at the base of the of the brine or refrigerant may be retained within the base of the receptacle to surround the tubes 4|. The hose comprising the outlet 42 may be ,5- of suitable length so that the container I! may be moved in and out of the box in order to replenish the supply of refrigerant without dis connecting the hose from the valve 43 which may be attached in the side of the box. The forward side 44 of the refrigerating container is made up of a solid piece of material so that there will be no leakage against the front piece 21 of the box. The valve 53 may, if desired, be closed so that there will be anadditionalaccumulation of brine refrigerantin the receptacle 39 with the object in, view of increasing the humidity of the fluid circulating through the apparatus. This is accomplished because the side of the receptacle 39 is made solid and has aserrated edge 46 so 3 that, when the level of the accumulated liquid in the receptacle 39 rises to the elevation of this edge 46,1t will overflow and drain down the out-, side until it reaches the ledge .52. This ledge ll is substantially at the same elevation as the low- 3?; ermost portion of the tubes or conduits 4!, so thatas the liquid drains down the side'45 it will pass into the tubes M and flow forwardly through the tubes and down into the base of thebox. Inasmuch as a considerable circula- 49 tion is had through these tubes 4| it seems obpicked ,up by the circulating fluid and in this manner a moist atmosphere maintained within the treatment chamber. Considerable moisture 5 may also be absorbed by the circulating medium as it passes over water Which has accumulated in the base of the control box beneath the grilles.

In connection with the soda lime container 20, best seen in Fig. 3, a plurality of partitions 50 50 are provided so that the soda lime may be dis- "posed in any one or. all of the sections of the container. Thus, if it is necessary to remove but a small amount of carbon dioxide from the circulating atmosphere, soda lime can be placed in 55,. only one or two of the sections 5|, which are defined by the partitions 5t. In this manner some of the atmosphere will be permitted to flow downwardly into the refrigerant container without coming in contact with the soda lime. ;.The front edge of this container 25 is screened,

as at 52, to allow entrance of the circulating atmosphere as it flows into the box through the in- 1 let 28. ,The rear side of the mixing, box as seen in Fig. 4 is provided with the flap 22, which is preferably hinged to the box. This flap may be used for the purposeof controlling the circulation around the soda'lime tray. The knob 22',

is provided outside of the box to operate the flap. in this manner thefiap can be adjusted to govern the soda lime treatment without opening the box. It is intended that the soda lime container may be moved forwardly or backwardly on its supportZl for the purpose of adjusting the flow of fluid not only through the soda lime but 15,-;alsoiinto the refrigerant chamber.. To accomvious that some amount of moisture will be plish this adjustment the'lever 20" extends from the rear ofthe box. If an analysis for carbon dioxide shows a variation from that desired the tray or. the flap may be adjusted to obtain the proper content.

I The front of the box l, as seen in Figs. 4 and 6, isspecially constructed with a view of forming a connection between'the box and the treatment housing regardless of the form which the housing may take. Fig. 6 illustrates the front of the is preferably arranged withlribs 56 tomake a restricted entrance to the recess. This recess is for the purpose of receiving the. bead 59 .of the connection of the treatment housing. I As seen in Fig. 6,'the bead is made up of the fabric of.

the tent as illustrated at 60, and has enclosed therein the rubber or resilient tube 55. This bead may be confined in the recess 55 and serves to form an air tight connection when thebead is stretched so as to reduce its diameter and then allowed to expand after it has been positioned in the recess 55.. In some instance, however, it is desirable to obtain an absolutely airtight vconnection at this point and with this in mind the.

bulb $2 has been connected to the hose or tubing 6! within the bead so that the tube may be inflated. after it is inserted in the recess 55. It

intended that either the inflatable or non-inflatable tube may be utilized in perfecting an airtight connection if desired. It is intended that this same type of connection for the treatment housing may be used both with the tent construction shown inFig. 1 and with the bed box construction shown in Figs. 7 to 10, inclusive.

Fig. 6 also shows a form of the invention Where the box may be opened to the atmosphere in order to refresh the fluid within the box and chamber so that fresh atmosphere may be entering the apparatus continuously if desired. It has been found that the rarer gases in the atrespiration and are supplied in this apparatus by the following arrangement. The introduction of fresh air to the apparatus-and the exhaust of the stale fluid may be taken advantage of in the control of the humidity of the contents of the apparatus, and for the purpose of controlling the temperature when oxygen is not administered. The wall 65 of the box 4 is made up of a double thickness in order to provide the passages or conduits 66 and 6?. The passage 66 is formed in the wall 65 and is provided withan opening 63 into the interior of the box 4. The lower end of this passage E56 is controlled by the gate or shutter 59 which opensto the atmosphere. Thus, when'the shutter 69 is open the warmfiuid in the top of the box will move into the opening 68 and out of the lower end of the conduit by reason of convection circulation. In this manner stale atmosphere within the apparatus can be removed. The gate Iii controls the conduit 6?;

which has its entrance into the box at ll adjacent the lower part of the box. Thus, whenthe gate H3 is open there will be an inflow of atmosphere by convection which will enter thebox through the opening H. .As seen in Fig. 6, the shutters or gates 69 and 10 are controlled by a knob or handle 13, which may project from the side of the box and has connected thereto the rocker arm 14. Suitable rods are'connected to the opposite end of this rocker arm and to the shafts '16 upon which the gates 69 and 70 are mounted Itis thus apparent that .these two box as being formed with a recess 55, which gates will be operated simultaneously by manipulation of the knob 13.

A support construction for the tent form of the treatment housing is seen in Fig. 4. This form of the support is collapsible so that the tent may be moved into a position closely adjacent the front of the mixing box and may be extended so that the housing or tent will assume the position of Fig. 1. In order to accomplish this, the rack is made up in sections which compose the rod 80, which is pivoted at 8i to the front of the box. Pivoted to the outer end of this rod is the link 82 and to this link is pivoted the next section of the rod 83. The pivot connection of both of these rods to the link 82 is such that the rods can pivot inwardly toward each other, as viewed in Fig. 4, but can not be moved beyond a straight position such as illustrated. The outer end of the rod 33 is curved and has pivotally connected thereto the central rod 84.

This rod is pivoted at each end to the opposite rods 83. With this construction the links 82 can move inwardly so that the central rod 84 will be drawn toward the front of the box and the folding of the tent structure will be accomplished at a point between the box and the window 85 and between the windows 85 and 36, so that the material forming the windows will not be bent or deformed. That part of the tent overhanging the rod 84 will remain stationary and will merely move toward the front of the box to assume a collapsed position. This form of the tent support has been found to be very desirable because no openings are required in the tent and it may be either collapsed or extended by merely exerting pressure upon the sides of the tent adjacent the links 82, so that they will be moved inwardly and thereafter exert a pressure on the front of the tent supported by the rod 34.

Fig. 6 shows a stop cook 43 as projecting from the rear of the box and also shows the drain 89 for the base of the box. The tube Bi is to have the oxygen tank connected thereto in order to introduce oxygen into the box. The tube 98 extends forwardly of the box and discharges into the small oxygen chamber 9! which is provided with a plurality of small openings 92 so that only small streams" of oxygen may enter the treatment chamber. Thus there will be no draft upon the patient due to the incoming oxygen. This chamber 9i will be positioned beneath the shutter groove so that if desired the shutters can be opened or closed without affecting the inflow of oxygen. This is of advantage when recharging the soda lime or refrigerant containers because the shutters can be closed and the control box opened without diluting the enriched air in the treatment housing. As soon as the control box is closed the shutters may be again opened.

Fig. '7 shows a construction at 94 which indicates a tube or suitable device for communication with the interior of the treatment chamber and may comprise a tube through the box structrue with a flexible connection on the inside of the box and a slide shut-off plate 95 in the tube so that it may be opened or closed from either the inside or the outside of the box.

The form of the invention illustrated in Figs. 7 to 10, inclusive, shows a modified form of the treatment housing. This construction is best seen in the perspective views of Figs. 7 and 8, and embodies a housing i053; which is suitably supported upon legs 531, which are preferably provided with casters or rollers I02. The housing I isof a. suitable size so that thepatient may be placed within the housing. The construction will preferably be provided with windows 103 which may be arranged in any desired position or location within the housing, and, if desired, the entire upper portion 104 may be made transparent so that the patient may be exposed to the suns rays.

The control box previously described has been illustrated generally at I85 in Figs. 7 and 8. It is to be understood that this control box may be mounted upon the standards of the uprights, as shown in Fig. 1, or it may be mounted upon a table or other support W8, as seen in Fig. 7. The side of the housing, as seen in Figs. 9 and 10, is constructed to have connected thereto the control box hi which is the same as the box 4. The connection for the box in this form of the invention will be substantially the same as that described in connection with Fig. 6. The material used to make up the housing is illustrated at E6 in Fig. 6 and by the numeral Gil in the present construction. It is intended that this material will be firmly anchored, as at I06, within the housing, and can be positioned in the groove 55, as previously described in connection with Fig. 6.

The general construction and arrangement of the box E05 is best seen in Figs. 9 and 10. It is intended that the opening in the side of the housing lfiil will match the front of the box I05. To assure the proper and uniform circulation of the fluid through the housing and the control box a deflector or baffle plate I88 has been suspended from the top of the housing and can be best seen -in Figs. 9 and 10. This plate assists in forming a dome in the top of the box so that the warmer fluid can accumulate and be drawn into the mixing box by convection because of the flow from the mixing box through the outlet 25 into the housing. A slide or partition H1! is movable laterally to engage the front piece 22 of the box and prevents the fluid from rising in the housing and passing directly into the mixing box. Thus the fluid entering the box must be drawn from the dome above the plate I08 and will be the warm fluid from the top of the box. A somewhat similar arrangement is provided in my copending application, Serial No. 630,497, filed August 26, 1932. The provision of this dome causes the incoming fluid to circulate entirely across the housing before it can escape. A valve controlled connection for the admission of oxygen is illustrated at H6, and extends to a point below the baflle I58 so that the oxygen can be admitted into the housing. In this manner the housing can be charged with enriched fluid before the control box is placed in operation or before the patient is placed in the apparatus. A vent I25 is seen in Figs. 9 and 10 at the foot of the housing m8 so that the housing may be ventilated.

To charge the box with oxygen the storage tank will be connected to the tube I I0 and the vent I26 will be opened to allow the air to escape. The shutters on the control box should be closed until the desired oxygen content is obtained. If this method is followed the housing can be charged and ready for use on short notice and without waste. When the housing is charged the supply of oxygen will then be connected to the tube 90 on the mixing box I 05, the shutters 30 and 3| adjusted and the device is then ready for use.

Fig. 7 shows one side of the housing I00 which is arranged for opening in order that the patient may be placed within or removed from the housing. This opening is shown as being closed by the side board .I II and the gate ordoor I I2. Fig.

8 shows the housing in open position so that the patient may be placed therein or removed therefrom and illustrates the arrangement of the apparatus when the patient is being attended. The Side board I I I constitutes part of the base of the box H4, which may be moved into the housing, as shown in Fig. 7, or drawn out from the housing as shown in Fig. 8. A leg and caster I I support the outer edge of this box or base so that the weight of the patient may readily be placed thereon. This base is preferably mounted upon a trackway H6, and has thereon a rack 1, into which the pinion H6 is adapted to mesh. The pinion I It is rotated by means of a crank I I9, so that the base may be conveniently moved. This base serves to support a spring and mattress H8 adapted to receive the patient. I

In order that the patient may readily be admitted and removed from the box, the door H2 provides additional clearance and is hinged at I I9 to the top of the side I I I. The door I I2 is closed with a suitable latch I29 and may be opened independently of any movement of the box H4 when it is desired to insert or remove any article from the housing. As a matter of fact, the small doors I22 are provided in the large door so that but a small opening will be made and no excessive amount of enriched fluid from within the housing will escape. The bed carriage is also closed with latches at each end which prevent carriage from opening out of housing.

The box H4 may be provided with a framework I23 adjacent the head thereof and about this framework will be drawn a transparent material such as Cellophane, or the frame may be covered and a window such as I23 provided. Attached to this frame will be a curtain I24, which will serve to close the opening I25 in the side of the housing when the box is opened. In this manner the box may be opened and the patient withdrawn for general nursing treatment while still breathing the enriched fluid from within the housing, because the curtain I25 serves to close the housing and the head of the patient will, be disposed within this framework I23. A Wiper or shield. I36 is attached to the rear of the base Ii l so that there will be practically no loss of enriched fluid while the carriage is being moved in or out of the housing, by escape of fluid beneath the carriage.

It is, of course, intended that suitable handles will be provided and, if desired, a shelf or cage may be mounted on the side of the housing to support the control box I05 and its associated apparatus. The particular advantage of this form of housing is that the patient may be completely enclosed and may be moved about at will so that he can be moved into a sunlit area or be otherwise moved about as desired. Of course, a treatment housing of this sort will be more economical because there is no leakage of oxygen therefrom and a more complete treatment can be administered to the patient.

While two forms of the treatment housing have been shown and described it is contemplated that the general invention is the same in both and that these two species vary in detail, only the general combination of the mixing box and treatment housing being the same.

What is claimed is:

3.. In combination with an oxygen dispensing and control box, a tent to administer treatment, an inlet and an outlet formed in the side of said control box, and means to simultaneously vary the size of said inlet andsaid outlet in order to control the flow of fluid from said box to the tent and from the tent to the box.

2. In an oxygen therapy apparatus including a control box and a treatment chamber, a control mechanism to regulate the circulation of fluid including a pair of vertically movable shutters and means to move said shutters to adjust the circulation passages between said box and the treatment chamber, said means including a connection to one of said shutters and flexible elements suspending said shutters in balanced position.

'4. A connection between the control box and the treatment housing of an oxygen therapy apparatus including a recess about the periphery of the box, a hollow expansible member carried by the treatment housing within said-recess, and means" for forcing a fluid into said expansible member to expand said member and to form a seal between the material of the connection and the walls of the recess.

5. A connection between the control box and the treatment housing of an oxygen therapy apparatus including a flange on the box toform a recess, a resilient means carried by the treatment housing to be disposed within said recess and means toinflate said resilient means to make a fluid-tight connection,

6. In an oxygen therapy apparatus a control box, a treatment housing, and means supporting said housing said means including a collapsible rack made up of a plurality of hinged sections whereby said housing may be collapsed and raised away from its operative position.

'7. An oxygen therapy apparatus including in combination a control box, a treatment housing, a detachable connection between said box and housing, inlet and outlet means in said box so that circulation of enriched atmosphere may flow through said housing by convection, and means to support said treatment housing including a folding rack connected to said box within said housing.

8. In an oxygen therapy control box, including refrigerating means within the box. inlet spaced from the bottom of the box for admitting atmosphere to the box, a passage from said inlet to a point near the bottom of the box whereby the admitted air is cooled during passage therethrough, an outlet to atmosphere for stale fluid from the top of the box, means to adjust the size of said inlet and said outlet, and means adjustable to control the circulation of fluid to a patient.

9. In an oxygen therapy apparatus comprising a control box and treatment housing, a connection between said box and housing including an elongated groove in the wall of the box, a fold of material of the connection within said groove, and anelongated expansible member expanded within the fold of material in the groove and holding the material of the connection into sealing engagement with the walls of the groove.

TI-IADDEUS ARTHUR TAYLOR. 

